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- W3139964765 abstract "BACKGROUND OBJECTIVE: Protein kinase CK2, a kind of ubiquitous eukaryotic messenger-independent protein serine/threonine kinase, plays a vital role in cell differentiation and proliferation, signal transduction and procession. Activity of CK2 in hematopoietic cells is 2-8 folds higher than that in relevant normal tissues, moreover changes of CK2 activity are correlated to tumor growth. In order to investigate the mechanism of its effect on hematopoietic cells, we used yeast two-hybridization screening the proteins interacting with protein kinase CK2α′ subunit from HL-60 cells cDNA library. METHODS: The target CK2α′ cDNA was obtained by amplifying recombinant plasmid pTHCK2A′, containing human protein kinase CK2α′ subunit cDNA, through polymerase chain reaction (PCR). Pst Ⅰ/Nde Ⅰ-digested PCR products were directionally cloned into DNA-BD vector pGBKT7, which had also been digested by Pst Ⅰ/Nde Ⅰ. The recombinant plasmid was named yeast two-hybridization BD bait plasmid, and confirmed by DNA sequencing, and auto-activated experiments. Total RNA of HL-60 cells was extracted, CLONTECH switching mechanism at 5′ end of RNA transcirpt method was used to construct a cDNA library in yeast cells. Library plasmid was named AD plasmid. BD plasmid and AD plasmid were co-transformed into competent yeast AH109. Yeast two-hybridization was used to screen positive clones. RESULTS: Six proteins, interacting with human protein kinase CK2α′ subunit, were screened. DNA sequencing and homology comparison showed that one of the proteins was highly homologous with ubiquitin/ribosomal protein S27a (99.8%). CONCLUSION: Using yeast two-hybridization system could screen out ubiquitin/ribosomal protein S27a, which may interact with human protein kinase CK2α′ subunit, from HL-60 cells." @default.
- W3139964765 created "2021-04-13" @default.
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- W3139964765 date "2005-01-01" @default.
- W3139964765 modified "2023-09-23" @default.
- W3139964765 title "Screening Ubiquitin/Ribosomal Protein S27a by Yeast Two-Hybridization System" @default.
- W3139964765 hasPublicationYear "2005" @default.
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